Abstract: The invention comprises a first (1) and a second (2) flexible sheet that are connected together to form a housing for articles, with an opening through which said articles can be inserted and which includes closure means; the invention is characterized in that, furthermore, it comprises a third (3) flexible sheet arranged between the first (1) and the second (2) flexible sheet, therefore forming two separate compartments (4 and 5), one in which a cold item (8), such as ice, frost or a chemical product, is placed and another in which an article (9) is placed. The arrangement described makes it possible to extend the preservation period of the article (9).